203440422013 has 16 divisors (see below), whose sum is σ = 205573737600. Its totient is φ = 201318811200.

The previous prime is 203440421983. The next prime is 203440422023. The reversal of 203440422013 is 310224044302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203440422013 - 2⁵ = 203440421981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203440422023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69219498 + ... + 69222436.

It is an arithmetic number, because the mean of its divisors is an integer number (12848358600).

Almost surely, 2^203440422013 is an apocalyptic number.

It is an amenable number.

203440422013 is a deficient number, since it is larger than the sum of its proper divisors (2133315587).

203440422013 is a wasteful number, since it uses less digits than its factorization.

203440422013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203440422013 its reverse (310224044302), we get a palindrome (513664466315).

The spelling of 203440422013 in words is "two hundred three billion, four hundred forty million, four hundred twenty-two thousand, thirteen".